A waffle chart is basically a square version of a pie chart. Since it does not involve angles, it’s easier for the reader to compare accurately .A waffle chart uses a grid of differently colored squares (hence the name) to show proportion instead of pie slices, making it easier for the viewer to cognitively process the various data relationships. A lot of times, these are used as an alternative to the pie charts. It provides visual communication beyond simple data visualization.
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